124. Solving a chemistry problem
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Product description
- An experiment on the effect of temperature on swelling was carried out by placing a sample of dry gelatin weighing 1.09 g in water at two different temperatures. The following data on the increase in the mass of the sample over time were obtained:
t, min mass of sample m, g
0 50 100 150 200 250
T= 291 K 1.09 7.14 11.55 14.66 16.46 16.90
T=318K 2.05 21.52 37.43 19;48 1.15 —
Plot swelling kinetic curves and determine the type of swelling. Determine if gelatin is lyophilic or lyophobic with respect to water.
- How does the temperature and nature of the solvent affect the type of swelling?
- In what cases does limited and unlimited swelling occur? Give examples.
Additional information
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